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Statement 1: 'Atomic mass is the fundame...

Statement 1: 'Atomic mass is the fundamental property of an element.'
Statement 2: 'Atomic number is a more fundamental property of an element than its atomic mass.'
a) Which statement is correct? Justify your answer.
b) Name the scientist who proposed this statement? What observation led him to this conclusion?

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MAXIMUM PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-EXAMPLE
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  2. Electronegativity differs from electron gain enthalpy. a) Do you agre...

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  3. Ionization enthalpy is an important periodic property. a) What is the...

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  4. The second period elements show anomalous behaviour. a) Give reason. ...

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  5. Atomic size, valency, ionization enthalpy, electron gain enthalpy and ...

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  6. a) Which is the element among alkali metals having lowest ionization e...

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  7. Li and Mg belonging to first and second group in periodic table respec...

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  8. During a group discussion a student argues that both oxidation state a...

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  9. Among the elements of the third period, identify the element. a) Wit...

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  10. A cation is smaller than the corresponding neutral atom while an anion...

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  11. a) Howthe metallic character varies in the periodic table? b) Categor...

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  12. A group of ions are given below: Na^+, Al^3+, O^2-, Ca^2+, Mg^2+, ...

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  13. Statement 1: 'Atomic mass is the fundamental property of an element.' ...

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  14. Atoms possessing stable configuration have less tendency to loss and c...

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  15. Mendeleev arranged the elements in the order of increasing atomic weig...

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  16. a) Name any three numerical scales of electronegativity. b) How elec...

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  17. a) First ionization enthalpy of Na is lower than that of Mg. But its s...

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  18. Removal of electron becomes easier on moving down the group. a) Comme...

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  19. The energy released during the addition of an electron to an isolated ...

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  20. The physical and chemical properties of elements are periodic function...

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